Recent Changes - Search:

Surveys and data


Instruments


Support to other department sections


Support Dr. Scient. thesis


Contribution to "Scientific infrastructure"


Obsolete, kept for reference


edit SideBar

Last update: May 12, 2021, at 06:55 AM
Version: pmwiki-2.2.134

DAMAGE REPORT "INFORS AG MOD. AK-85 SHAKER", 7 March 2014


About this document


Issued by O.M., 7 March 2014

Equipment


  • Manufacturer: INFORS HT
    • Rittergasse 27
      CH - 4103 Bottmingen/Basel
      Switzerland
  • email: info@infors-ht.com
  • Local representative: Tamro MedLab, from 2007 OneMed Norge
    • Telefon kundeservice: 2230 9130
    • Email: bestilling.no@onemed.com

PCB NO. HT 19355, 50024A , REV. A


Motor driver components overheated. Via hole on PCB burnt => some traces on the PCB might be damaged.

PCB NO. HT 19355, 50024A , REV. A
PCB NO. HT 19355, 50024A , REV. A

Measurements


Measured motor windings on 12-way connector:

  Counting from left (referring to picture below):

  Resistance between 1 (red) and 2 (red), to high-wattage resistor mounted separately near motor assembly: 472 ohm
      --- " ---      3 (black) and  4 (red): 193 ohm
      --- " ---      5 (black) and  6 (red): 193 ohm
      --- " ---      7 (black) and  8 (red)  193 ohm
      --- " ---      9 (black) and 10 (red): 193 ohm
      --- " ---     11 (black) and 12 (red): 192 ohm

  Measured from all 12 positions to chassis ground: OK, no leakage.

  Measured from each motor pair to the other pairs: OK, no leakage.

CONCLUSION: Motors and wiring seems to be OK. The 12-way connector should be replaced - looks worn-out.

Edit - History - Print - Search
Page last modified on March 07, 2014, at 01:04 PM
Electronics workshop
Department of Earth Science - University of Bergen
N O R W A Y